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Finding the Fourth Proportional to 6,611.22, 9,918.65 and 3,493.87

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Solution

The fourth proportional to 6,611.22, 9,918.65 and 3,493.87 is: 5,241.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.22 : 9,918.65 = 3,493.87 : x
  2. Step 2: Convert to fraction form
    6,611.22/9,918.65 = 3,493.87/x
  3. Step 3: Cross multiply
    6,611.22x = 9,918.65 × 3,493.87
  4. Step 4: Simplify right side
    6,611.22x = 34,654,457.61
  5. Step 5: Solve for x
    x = 34,654,457.61/6,611.22
  6. Step 6: Final answer
    x = 5,241.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.